Twin City 40-65
Verified
The Twin City 40-65 was one of Minneapolis Steel & Machinery’s big prairie tractors, built roughly 1910–1924 — a heavyweight from the dawn of the gas-tractor era and among the oldest MM predecessors documented here.
Identification & configuration
Per the compiled record, the 40-65 used a large four-cylinder engine (about 7¼ × 9 bore/stroke), with later ‘A’ and ‘B’ engine variants. Its serial numbers were shared with the six-cylinder 60-90.
See the Twin City overview and predecessors guide.
Factory paint
These prairie tractors predate the documented MMCI paint tables (which begin in the late 1910s); verify original finish against period evidence rather than the later Twin City gray standard. See the full paint reference.
What to verify
- Shared serials: the 40-65 and 60-90 shared the 1001–1825 number block; the lookup returns both — confirm by engine (four- vs six-cylinder).
- Engine variant: ‘A’ vs ‘B’ affects bore/stroke; verify against the record.
Sources & Verification Notes
Serials and engine notes per Tony Thompson’s compiled Twin City record (MMCI). No horsepower or production-count figures are asserted beyond what the cited sources state.
Serial Number Ranges
| Year | Serial range | Number type | Source confidence |
|---|---|---|---|
| — | 1001 – 1825 | tractor plate | Verified High |
Specifications
| Years built | 1916 - 1925 |
|---|---|
| Original price | $3,250 |
| Built | Minneapolis, Minnesota, USA |
| Total built | 825 |
| Engine | Twin City 24.4L 4-cyl kerosene |
| Fuel tank | 95 gal / 359.6 L |
| Auxiliary fuel | 10 gal / 37.9 L |
| Transmission | 1-speed gear |
| Drive | Two-wheel drive |
| Steering | Manual |
| Drawbar (claimed) | 40 hp / 29.8 kW |
| Belt (claimed) | 65 hp / 48.5 kW |
| Drawbar (tested) | 49.71 hp / 37.1 kW |
| Belt (tested) | 65.53 hp / 48.9 kW |
| Weight | 23,700 lbs / 10,750 kg |
| Front tire | 42x12 |
| Rear tire | 84x24 |
Specifications per the cited source below. Manufacturer-advertised figures can differ from tested values — confirm restoration-critical specs against factory literature.
Source: TractorData: Twin City 40-65
Finding Parts
We don't publish part numbers we can't verify against factory literature. The authority for this model's part numbers is its factory parts catalog; interchange is serial- and configuration-dependent, so always confirm against the parts book before buying.
Surviving Examples (collector-reported census)
No tractors registered for this model yet. The MinnieMo registry is owner-submitted and moderator-reviewed — help start the census.
825 built (per Production total source — Twin City 40-65) — none registered yet. Be the first to put one on the map.
Sources & Verification Notes
Status: Verified
Primary source: Twin City Tractor Serial Numbers — Tony Thompson (MMCI) tier 2
Last checked: 2026-05-31
Where this model fits in the Minneapolis-Moline history & timeline →
Videos
Twin City 40-65 Vintage Tractor Start Up | JUMP BOISE Jack's Urban Meeting Place 
Twin City 40, Big Prairie Tractor! DavidN23SkidooCurated third-party videos — MinnieMo is not affiliated; links open on YouTube.
Owner Notes & Questions
Own one, restored one, or have a question about this model? Share it below. Notes are moderated before they appear, and owner-reported details are not treated as verified facts until cited.
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